The
following timeline for the History of Planet Earth was
culled from the following books and articles:

1. The
Urantia Book (Planet Earth = Urantia)
2. The
12th Planet, by
Zecharia Sitchin
3. Everything You Know is Wrong, by
Lloyd Pye
4. Humanity’s Extraterrestrial Origins, by Arthur
Horn
5. Genesis of the Grail Kings, by
Laurence Gardner
6. Solving the Greatest Mystery of Our Times: The
Mayan Calendar, by Carl Johan Calleman
7. Articles from The New York Times